How to Fertilize celery?
Every 2-3 weeks during growing season with high-nitrogen fertilizer

celery · Apium graveolens
Also known as: ach; celery seed; marche; marsh parsley; smallage; smalledge; sweet parsley; Venus's herb; wild celery; ache
Grow in reliably moist soil in full sun or light shade. See celery cultivation for more advice
Every 2-3 weeks during growing season with high-nitrogen fertilizer